iiNet's new boss David Buckingham is banking on the NBN to boost customer numbers. Photo: Christopher Pearce

iiNet chief executive Andrew Buckingham said the two companies needed to do everything they could to speed up talks and the rollout.

"We're furious about it," Mr Buckingham said on Thursday.

"When a company [Telstra] can make $7.5 billion in free cash, more profit than the cashflow the whole Vodafone group made last year, and still get paid $640 million by the government for the NBN, things are weird in my mind."

"NBN needs to get on with the rollout, we're sick of waiting." NBN Co is currently reviewing the rollout together with a number of reviews ordered by Communications Minister Malcolm Turnbull.

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It is also renegotiating with Telstra for access to its copper cables, given the government's preference for a fibre-to-the-node design which needs them to connect premises. The copper network was previously slated for disconnection under a $11 billion deal brokered by Labor.

iiNet has added about 17,000 customers to the fibre NBN since December 2013 compared with the 11,000 it has signed up to its regular broadband service.

Around half of the customers iiNet has signed up for NBN services are new to the company,Australia's second biggest digital internet service provider.

The NBN was its largest growth area of broadband subscribers in the past six months.

Mr Buckingham's tirade over the NBN came as iiNet reported a $63 million full year net profit, up 3 per cent on 2012/13.

Businesses now accounts for more than 20 per cent of iiNet's revenue, contributing more than $200 million to the company's bottom line.

It is also the first time the group has reached more than $1 billion in total revenue which it projects will continue to grow in FY15.